[saalweachter]

I would also note that domes are solving a problem most people don't have with their houses.

Domes are a great way to maximize the volume enclosed by a surface, which is almost a thing for heat loss, but you can do almost as well with a box and adding unusable volume is a false economy.

Domes are great for creating a massive, self-supporting enclosed space ... but again, why do you need that in your house? Conventional building techniques can make you a pretty large space pretty easily, and you don't typically need to support unusual loads on top of your house.

You don't even need to make your home in a dome shape to make it out of insulated concrete; insulated concrete forms are and easy way too throw together a box with the same basic benefits.

[jacquesm]

This is 100% true and it's the reason why I think dome houses are interesting and elegant but not necessarily cost efficient.